Prevented course index resource search from being focused when using CTRL+X for titlebar search dialog.
Enabled navigation using arrow keys (right/left) to expand/collapse folders.
Displayed size of downloaded files in toast notifications.
Enabled opening download attachments directly from messages.
Improved course-index resources tree structure with search highlighting and visual indicators for opened folders.
Added support for XML code blocks.
Implemented Sonner toasts for improved user notifications.
Improved downloading and loading speed for certain files by disabling web security in temporary scrape windows, allowing traversal of DOM through iframes.
Implemented course-divided folders for resources in zip downloads.
Added context menu on resources in course index (default click opens in app).
Improved authentication robustness.
Improved parallel downloading.
Fixed links from course-card context menu and added course subject description direct link.